/* Road Rulebook: one small stylesheet, mobile first, no web fonts. */

:root {
  --paper: #f6f5f1;
  --surface: #ffffff;
  --ink: #1a1d21;
  --muted: #5b6068;
  --line: #e4e1d9;
  --line-strong: #cbc6ba;
  --slate: #1c2430;
  --link: #164a80;
  --amber: #a85a12;
  --amber-soft: #fdf3e2;
  --ok: #1d6b46;
  --ok-soft: #e8f4ec;
  --no: #9b2c1f;
  --no-soft: #fbeceb;
  --info: #164a80;
  --info-soft: #e9f0f8;
  --focus: #1f5fbf;
  --radius: 14px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --measure: 46rem;
  --wrap: 74rem;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}
p, li, dd, figcaption { text-wrap: pretty; }
h1, h2, h3 { line-height: 1.2; text-wrap: balance; letter-spacing: -0.01em; }
a { color: var(--link); text-underline-offset: 0.16em; }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
[hidden] { display: none !important; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }

.skip { position: absolute; left: 0.5rem; top: -4rem; z-index: 50; background: var(--ink); color: #fff; padding: 0.6rem 0.9rem; border-radius: var(--radius-sm); }
.skip:focus { top: 0.5rem; color: #fff; }

/* ------------------------------------------------------------- header */

.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.75rem; padding-block: 0.75rem; }
.brand { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; margin-right: auto; }
.brand-mark { display: block; width: 28px; height: 28px; border-radius: 6px; flex: none; }
.site-nav { display: flex; flex-wrap: wrap; gap: 0.15rem 1.1rem; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 0.94rem; font-weight: 560; padding-block: 0.35rem; border-bottom: 2px solid transparent; white-space: nowrap; }
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--amber); }
.lang-switch { display: flex; flex-wrap: wrap; gap: 0.15rem 0.85rem; padding-left: 0.9rem; border-left: 1px solid var(--line); }
.lang-switch a { color: var(--muted); text-decoration: none; font-size: 0.94rem; font-weight: 560; letter-spacing: 0.03em; padding-block: 0.35rem; border-bottom: 2px solid transparent; white-space: nowrap; }
.lang-switch a:hover { color: var(--ink); }
.lang-switch a[aria-current] { color: var(--ink); border-bottom-color: var(--amber); }

/* ------------------------------------------------------------- footer */

.site-footer { margin-top: 4rem; border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { padding-block: 1.5rem 2rem; display: grid; gap: 0.75rem; }
.disclaimer { margin: 0; color: var(--muted); font-size: 0.92rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
.footer-nav a { color: var(--muted); font-size: 0.92rem; white-space: nowrap; }

/* ------------------------------------------------------------ articles */

.toc { display: none; }
@media (min-width: 72rem) {
  .article-layout { display: grid; grid-template-columns: minmax(0, var(--measure)) 15rem; gap: 4rem; align-items: start; }
  .toc { display: block; position: sticky; top: 1.5rem; margin-top: 5.5rem; border-left: 1px solid var(--line); padding-left: 1rem; }
  .toc ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
  .toc a { color: var(--muted); text-decoration: none; font-size: 0.9rem; line-height: 1.35; display: block; }
  .toc a:hover { color: var(--ink); }
}

main { padding-block: 1.5rem 0; }
.article { max-width: var(--measure); }
.article-head { margin-bottom: 1.25rem; }
.article-head h1 { font-size: clamp(1.75rem, 4.5vw, 2.4rem); margin: 0.5rem 0 0.35rem; }
.page-checked { margin: 0; color: var(--muted); font-size: 0.92rem; font-variant-numeric: tabular-nums; }
.article h2 { font-size: 1.35rem; margin: 2.25rem 0 0.6rem; scroll-margin-top: 1rem; }
.article h3 { font-size: 1.08rem; margin: 1.25rem 0 0.4rem; }
.block { margin-block: 0 1.1rem; }
.block > p { margin: 0; }
.block ul, .block ol { margin: 0; padding-left: 1.25rem; }
.block li + li { margin-top: 0.4rem; }
.lead > p:not(.source) { font-size: 1.15rem; line-height: 1.55; }
.callout { background: var(--amber-soft); border-radius: var(--radius-sm); padding: 0.9rem 1rem; }
.steps { counter-reset: step; list-style: none; padding-left: 0 !important; }
.steps li { counter-increment: step; position: relative; padding-left: 2.25rem; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 0.05em; width: 1.6rem; height: 1.6rem; border-radius: 50%; background: var(--slate); color: #fff; font-size: 0.85rem; font-weight: 700; display: grid; place-items: center; font-variant-numeric: tabular-nums; }
.value { font-variant-numeric: tabular-nums; white-space: nowrap; }

.source { margin: 0.35rem 0 0; font-size: 0.82rem; color: var(--muted); line-height: 1.45; }
.source a { color: var(--muted); }
.source a:hover { color: var(--ink); }
.source .source-label { margin-right: 0.35rem; }
.source .checked { font-variant-numeric: tabular-nums; white-space: nowrap; }
.source .sep { margin: 0 0.35rem; }
.source .more { margin-left: 0.25rem; font-size: 0.75rem; vertical-align: 0.15em; font-variant-numeric: tabular-nums; }

.quote { margin-inline: 0; }
.quote blockquote { margin: 0; padding: 0.8rem 1rem; border-left: 3px solid var(--amber); background: var(--surface); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--ink); }
.quote blockquote p { margin: 0; font-style: italic; }
.quote figcaption { margin-top: 0.5rem; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 0.55rem 0.75rem; border-bottom: 1px solid var(--line); }
thead th { font-size: 0.82rem; font-weight: 650; color: var(--muted); background: #faf9f6; white-space: nowrap; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
tbody th { font-weight: 600; }
td, .num { font-variant-numeric: tabular-nums; }
td.empty { color: var(--muted); }

.map-figure { margin-inline: 0; }
.map { display: block; width: 100%; height: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.map .land { fill: #ece9e1; stroke: #b9b3a5; stroke-width: 0.8; }
.map .zone path { fill: rgba(168, 90, 18, 0.55); stroke: #8a470c; stroke-width: 0.6; }
.map .zone circle { fill: #a85a12; stroke: #fff; stroke-width: 1.2; }
.map .sector.day { fill: rgba(22, 74, 128, 0.16); stroke: #164a80; stroke-width: 1.4; }
.map .sector.night { fill: url(#night); stroke: #6b7686; stroke-width: 1.2; stroke-dasharray: 4 3; }
.map .night-bg { fill: rgba(107, 118, 134, 0.08); }
.map .night-line { stroke: rgba(107, 118, 134, 0.45); stroke-width: 1.5; }
.map .sector-label { font: 700 15px var(--font); fill: #164a80; text-anchor: middle; paint-order: stroke; stroke: #fff; stroke-width: 3px; }
.map .sector-label.small { font-size: 10px; stroke-width: 2px; }
.map .park circle { fill: var(--slate); stroke: #fff; stroke-width: 2; }
.map .park text { font: 700 12px var(--font); fill: #fff; text-anchor: middle; }
.map .city { font: 600 13px var(--font); fill: var(--ink); paint-order: stroke; stroke: #ece9e1; stroke-width: 3px; stroke-linejoin: round; }
.map-de { max-width: 36rem; }
.map .scale path { fill: none; stroke: var(--ink); stroke-width: 1.2; }
.map .scale text { font: 11px var(--font); fill: var(--ink); }
.map-figure figcaption { margin-top: 0.5rem; }
.legend { list-style: none; padding: 0 !important; margin: 0 0 0.35rem; display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; font-size: 0.88rem; }
.legend li + li { margin-top: 0 !important; }
.legend .key { display: inline-block; width: 0.9rem; height: 0.9rem; margin-right: 0.4rem; vertical-align: -0.12em; border-radius: 3px; }
.legend .key.zone { background: rgba(168, 90, 18, 0.55); border: 1px solid #8a470c; }
.legend .key.day { background: rgba(22, 74, 128, 0.16); border: 1.5px solid #164a80; }
.legend .key.night { background: repeating-linear-gradient(45deg, rgba(107,118,134,.45) 0 1.5px, rgba(107,118,134,.08) 1.5px 5px); border: 1.5px dashed #6b7686; }
.legend .key.park { border-radius: 50%; background: var(--slate); }
.credit a { text-decoration-color: var(--line-strong); }
.credit { margin: 0.2rem 0 0; font-size: 0.8rem; color: var(--muted); }
.credit a { color: var(--muted); }

.seller-list { list-style: none; padding: 0 !important; display: grid; gap: 0.6rem; }
.seller-list li + li { margin-top: 0 !important; }
.seller { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0.75rem 0.9rem; }
.seller-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.25rem 1rem; font-weight: 650; }
.seller-head .price { font-weight: 600; font-variant-numeric: tabular-nums; color: var(--ink); }
.seller-kind { margin: 0.1rem 0 0; color: var(--muted); font-size: 0.9rem; }
.seller p { margin: 0.35rem 0 0; }
.seller .source { margin-top: 0.4rem; }

.dataset-list { list-style: none; padding: 0 !important; }
.dataset-list li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0.7rem 0.9rem; }
.dataset-list li + li { margin-top: 0.6rem; }
.dataset-list .checked, .source-group .checked { display: block; color: var(--muted); font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.licences dt { font-weight: 650; margin-top: 0.75rem; }
.licences dd { margin: 0.15rem 0 0; color: var(--muted); }
.source-group h3 { margin: 1rem 0 0.35rem; font-size: 1rem; }
.source-group ul { list-style: none; padding: 0 !important; }
.policy .address { line-height: 1.5; }

/* ------------------------------------------------------------------ home */

.home-title { font-size: clamp(1.6rem, 4.2vw, 2.2rem); margin: 0.5rem 0 1.25rem; }
.tools { display: grid; gap: 1.25rem; align-items: start; }
@media (min-width: 64rem) {
  .tools { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
}
.tool { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1rem, 3vw, 1.5rem); scroll-margin-top: 1rem; min-width: 0; }
.tool-title { font-size: 1.3rem; margin: 0 0 1rem; }
.tool-form { display: grid; gap: 0.9rem; }
.field { display: grid; gap: 0.35rem; margin: 0; padding: 0; border: 0; min-width: 0; }
.field > label, .field > legend { font-weight: 600; font-size: 0.95rem; padding: 0; }
.field > legend { margin-bottom: 0.35rem; }
select {
  width: 100%;
  min-height: 2.875rem;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%235b6068' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 0.85rem center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.55rem 2.4rem 0.55rem 0.75rem;
  appearance: none;
  -webkit-appearance: none;
}
select:hover { border-color: var(--muted); }
.segmented { display: grid; grid-template-columns: 1fr 1fr; background: #efede7; border-radius: var(--radius-sm); padding: 3px; gap: 3px; }
.segmented label { position: relative; display: block; cursor: pointer; }
.segmented input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.segmented span { display: flex; align-items: center; justify-content: center; min-height: 2.5rem; border-radius: 6px; font-size: 0.95rem; font-weight: 560; color: var(--muted); text-align: center; padding: 0.25rem 0.5rem; line-height: 1.2; }
.segmented input:checked + span { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(26, 29, 33, 0.12); }
.segmented input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 1px; }
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.chip span { display: inline-flex; align-items: center; min-height: 2.5rem; padding: 0.3rem 0.9rem; border: 1px solid var(--line-strong); border-radius: 999px; font-size: 0.95rem; font-weight: 560; background: var(--surface); color: var(--ink); }
.chip input:checked + span { background: var(--slate); border-color: var(--slate); color: #fff; }
.chip input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; }

.results { display: grid; gap: 0.75rem; margin-top: 1.1rem; }
.results:empty { display: none; }
.result { border-top: 1px solid var(--line); padding-top: 0.9rem; min-width: 0; }
.result-zone { font-size: 1rem; margin: 0 0 0.5rem; }
.result-zone a { color: var(--ink); text-decoration-color: var(--line-strong); }
.verdict { border-radius: var(--radius-sm); padding: 0.75rem 0.9rem; border-left: 4px solid; }
.verdict p { margin: 0.25rem 0 0; }
.verdict .verdict-head { margin: 0; font-weight: 700; }
.tone-ok { background: var(--ok-soft); border-color: var(--ok); }
.tone-ok .verdict-head { color: var(--ok); }
.tone-no { background: var(--no-soft); border-color: var(--no); }
.tone-no .verdict-head { color: var(--no); }
.tone-warn { background: var(--amber-soft); border-color: var(--amber); }
.tone-warn .verdict-head { color: #7a4208; }
.tone-info { background: var(--info-soft); border-color: var(--info); }
.tone-info .verdict-head { color: var(--info); }
.sellers { list-style: none; margin: 0.6rem 0 0; padding: 0; display: grid; gap: 0.35rem; }
.sellers li { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0 0.75rem; padding-top: 0.35rem; border-top: 1px solid rgba(29, 107, 70, 0.18); }
.sellers .price { font-weight: 650; font-variant-numeric: tabular-nums; }
.sellers .note { flex-basis: 100%; color: var(--muted); font-size: 0.88rem; }
.planned { margin: 0; color: var(--muted); font-size: 0.88rem; }

.topics { margin: 0; display: grid; gap: 0.65rem; }
.topic { display: grid; gap: 0.15rem; }
.topic dt { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.topic dd { margin: 0; display: grid; gap: 0.4rem; }
.line p { margin: 0; }
.line .source { margin-top: 0.15rem; }

.guides { display: grid; gap: 0.6rem; margin-top: 1.75rem; }
@media (min-width: 40rem) { .guides { grid-template-columns: 1fr 1fr; } }
.guide { display: block; padding: 0.85rem 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); color: var(--ink); text-decoration: none; font-weight: 600; }
.guide:hover { border-color: var(--line-strong); color: var(--link); }

.nojs-only { margin-top: 0.5rem; display: grid; gap: 0.6rem; }
.js .nojs-only { display: none; }
.no-js .tool-form, .no-js #vehicle .results { display: none; }